Article,
Naphthyl end-capped bithiophene film on plant-based polyamide-4,10
Contributors
Huss-Hansen, Mathias
0000-0003-4487-508X
[2]
Kjelstrup-Hansen, Jakob
0000-0003-4482-4979
(Corresponding author)
[2]
Knaapila, Matti
0000-0002-4114-9798
(Corresponding author)
[1]
Affiliations
- [1] Norwegian Univ Sci & Technol, Dept Phys, NO-7491 Trondheim, Norway [NORA names: Norway; Europe, Non-EU; Nordic; OECD];
- [2] Univ Southern Denmark, Mads Clausen Inst, NANOSYD, DK-6400 Sonderborg, Denmark [NORA names: SDU University of Southern Denmark; University; Denmark; Europe, EU; Nordic; OECD]
Abstract
We report on a vacuum deposited 5,5'-bis(naphth-2-yl)-2,2'-bithiophene (NaT2) film on bio-based polyamide4,10 (PA410) substrate. The substrate is moderately hydrophobic with dominant dispersive interactions. Nominally 25 nm thick NaT2 films on PA410 adopt lying-down (face-on) crystals that follow island type growth mode. They show charge carrier mobilities 3 & sdot;10-5 cm2/Vs as well as the area normalized photoresponsitivities up to 20 mu A/W at 100 V and a light intensity of 78 W/m2. Full coverage is achieved for 50 nm film thickness. This performance matches that of identically prepared films on polyester substrates that are commonly employed in organic electronics. This study shows how photosensitive bithiophenes can be grown on low carbon footprint polyamides, ultimately lowering the carbon footprint of the entire device.
